<body>
  <table>
    <tr>
      <th>姓名</th>
      <th>语文</th>
      <th>数学</th>
    </tr>
    <tr>
      <td>Tom</td>
      <td>76</td>
      <td>89</td>
    </tr>
    <tr>
      <td>Lucy</td>
      <td>98</td>
      <td>90</td>
    </tr>
    <tr>
      <td>Jimmy</td>
      <td>100</td>
      <td>99</td>
    </tr>
    <tr>
      <td>John</td>
      <td>45</td>
      <td>12</td>
    </tr>
  </table>
  <script src="jquery-1.12.4.min.js"></script>
  <script>
    console.log($('tr:first'));
    console.log($('tr:odd'));
    console.log($('tr:not(tr:first)'));
  </script>
  <a href="../首页/page11.html">
    <h2>返回上一页面</h2>
  </a>
</body>